OCE Ch8

MA: Of the following statements about forces and tidal bulges, which is/are true? On the side of Earth closest to the Moon, a tidal bulge will form as a result of an excess of centripetal force. Tidal bulges are produced only on the side of Earth closest to either the Moon or the Sun. On the side of Earth closest to the Moon, a tidal bulge will form as a result of an excess of gravitational force. On the side of Earth facing away from the Sun, a tidal bulge will form due to an excess of centripetal force. Tidal bulges are produced on both sides of Earth from the Moon and the Sun. On the side of Earth facing away from the Sun, a tidal bulge will form as a result of an excess of gravitational force.

--on the side of earth closest to the moon, a tidal bulge will form as a result of an excess of gravitational force -on the side of the Earth facing away from the Sun, a tidal bulge will form due to an excess of centripetal force -Tidal bulges are produced on both sides of Earth from Moon and the Sun

MA: Of the following statements about tidal patterns and tidal charts, which are true? A mixed tidal pattern has two lows of about equal height and two highs of about equal height every tidal day. A diurnal tidal pattern has two high tides every tidal day. A semidiurnal tidal pattern has two low tides every tidal day. A mixed tidal pattern has two lows of unequal height and two highs of unequal height every tidal day. The tidal range is the difference in height between a high tide and a low tide. A tidal day is 24 hours and 50 minutes long.

-a semidiurnal tidal pattern has two low tides every tidal day -a mixed tidal pattern has two lows of unequal heigh and two highs of unequal height every tidal day -The tidal range is the difference in height between a high and a low tide -a tidal day is 24 hours and 50 minutes long

MA: Of the following statements about lunar phases, which is/are true? Over the few days of a waxing crescent moon, the tidal range decreases. Over the few days of a waxing crescent moon, the tidal range increases. Over the few days of a waxing gibbous moon, the tidal range decreases. Over the few days of a waning gibbous moon, the tidal range increases. Over the few days of a waxing gibbous moon, the tidal range increases. Over the few days of a waning crescent moon, the tidal range decreases.

-over a few days of a waxing crescent moon, the tidal range increases -over the few days of a waxing gibbous moon, the tidal range increases

MA: Of the following statements about the force of gravity between two bodies, which is/are true? The force of gravity between two bodies decreases as distance increases. The force of gravity between two bodies decreases with an increase in mass. The force of gravity between two bodies is most affected by a change in mass. The force of gravity between two bodies increases with an increase in mass. The force of gravity between two bodies is most affected by a change in distance. The force of gravity between two bodies increases as distance increases.

-the force of gravity between two bodies decreases as distance increases -the force of gravity between two bodies increases with an increase in mass -the force of gravity between two bodies is most affected by a change in distance

MA: of the following statements about the contribution of the Sun and the Moon to Earth's tides, which is/are true? The solar tidal bulges are about twice the size of the lunar tidal bulges. The Moon exerts over twice the gravitational pull of the Sun on Earth's tides because of its proximity to Earth. The Sun's contribution to the tides is less than that of the Moon. The Sun exerts over twice the gravitational pull of the Moon on Earth's tides because of its massive size. The Moon's contribution to the tides is less than that of the Sun. The lunar tidal bulges are about twice the size of the solar tidal bulges.

-the moon exerts over twice the gravitational pull of the Sun on Earth's tides because of its proximity to Earth -The Sun's contribution to the tides is less than that of the Moon -The lunar tidal bulges are about twice the size of the solar tide bulges

How many spring and neap tides will a tide-recording station experience in a given month? 1 to 3 spring tides and 3 to 4 neap tides 3 to 4 spring tides and 1 to 3 neap tides 2 spring tides and 2 neap tides 1 spring tide and 1 neap tide

2 spring tides and 2 neap tides

a lunar day is:

24 hours and 50 minutes

It is Wednesday, and you are planning a fishing trip for this coming Saturday. You have heard that fishing is best at your chosen spot when the ebb current begins to flow, so you wish to start fishing at high tide. You do not have a tide table, but you have noted that today's high tide was at 1:10 p.m. At what time on Saturday should you plan to arrive and start fishing? 10:40 a.m. 4:45 p.m. 3:40 p.m. 1:10 p.m.-conditions looked very good today! 2:50 p.m.

3:40 PM

Why does the Moon generate larger tidal forces than the Sun?

Although the Sun is bigger, the Moon is much closer

If you had to navigate a ship into a shallow, rocky harbor with mixed tides, when would be the best time for you to do it? during the maximum flood current during the maximum ebb current during the transition from ebb to flood current approaching the high slack water approaching the low slack water

Approaching the high slack water

in the US semidiurnal tides commonly occur along the

Atlantic Coast

Why does the resultant tide-generating force create a tidal bulge on the side of Earth that faces away from the Moon? The centripetal force is weaker than the gravitational force at the zenith. The centripetal force is weaker than the gravitational force at the nadir. The centripetal force is equal to the gravitational force at both the zenith and nadir. The centripetal force exceeds gravitational force at the zenith. Centripetal force exceeds gravitational force at the nadir, or the point on Earth furthest from the Moon.

Centripetal force exceeds gravitational force at the nadir, or the point on Earth furthest from the Moon.

Which of the following statements is true? Semidiurnal tides are a tidal pattern in which there are two high tides and two low tides per lunar day, one high tide higher than the other. Neap tides occur when the solar tide and the lunar tides are additive, producing higher high tides and lower low tides. Diurnal tides are a tidal pattern in which there is one high tide and one low tide in a lunar day. Mixed tides are a tidal pattern in which there are two high and low tides daily of approximately equal tidal heights. At perigee, tidal ranges are minimized.

Diurnal tides are a tidal pattern in which there is one high tide and one low tide in a lunar day

T/F: The Sun and the Moon have relatively equal tide-generating forces on Earth

False

T/F: a lunar day is shorter than a solar day

False

If the side of the Earth that faces the moon experiences a high tide, then the side of the Earth that is opposite from the moon will have a/an:

High tide

what path did the rotating item take at the moment the string was let go? It flung off and hit the globe. It flew off directly toward the camera. It went behind him and hit the vase of flowers. It traveled in a straight-line path that was tangent to its circular orbit. Its path did not change; it continued in a nearly circular orbit.

It traveled in a straight line path that was tangent to its circular orbit

Which doesn't belong: A. full moon B. neap tide C. new moon D. spring tide E. syzygy

Neap Tide

What do we call the tide that occurs when destructive interference between lunar and solar bulges produces a small tidal range? spring tide fall tide neap tide pean tide

Neap tide

In the US mixed tides commonly occur along the

Pacific Coast

What do we call the tide that occurs when the constructive interference between the lunar and solar bulges produces a large tidal range? neap tide spring tide fall tide pean tide

Spring Tide

If it is January and the Moon is in syzygy, what additional factor would contribute to extreme tidal ranges around the world? the Earth in aphelion the Moon in quadrature the Moon in perigee the Moon in apogee

The moon in perigee

what are tides? the regular daily rises and falls in sea level caused by the gravitational attraction of the Moon on Earth the regular daily rises and falls in sea level caused by the gravitational attraction of the Moon and Sun on Earth the regular daily rises and falls in sea level caused by the gravitational attraction of the Sun on Earth the regular weekly rises and falls in sea level caused by the gravitational attraction of the Moon on Earth the regular weekly rises and falls in sea level caused by the gravitational attraction of the Moon and Sun on Earth

The regular daily rises and falls in sea level cased by the gravitational attraction of the Moon and Sun on Earth

Why are high tides found simultaneously on opposite sides of Earth? The tidal bulges occur on both sides of Earth that are aligned with the tide-generating body. The ocean water experiencing high tide rotates around Earth on a 12-hour cycle. The tidal bulges occur on both sides of Earth that are perpendicular to the tide-generating body. The ocean water experiencing low tide rotates around Earth on a 12-hour cycle.

The tidal bulges occur on both sides of Earth that are aligned with the tide-generating body

T/F: The plane through the ellipse that marks the revolution of the Earth around the Sun is called the ecliptic

True

T/F: When spring tides coincide with lunar perigee, the tidal range is increased

True

What common household item is used in this video to demonstrate the forces that act on bodies to create tides on Earth?

a racquetball

The barycenter follows: a smooth orbit around the Sun. a wavy path around the Sun. a path that is perpendicular to the Earth's ecliptic. the Earth's declination. a pattern that parallels the Moon's orbit.

a smooth orbit around the sun

The center of an open ocean tidal system is called a/an: amphidromic point. seiche. tidal flux. cotidal center. rotary center.

amphidromic point

When the Earth is at its greatest distance from the sun, it is said to be at: perigee. perihelion. apogee. aphelion. proxigean.

aphelion

a relatively small tidal range could be expected ___________: at a time of syzygy at an amphidromic point at the end of a cotidal line far from an amphidromic point when Jupiter and Mars are in conjunction in an area with a wide continental shelf

at an amphidromic point

the _______ force pulls an orbiting body toward the center of that orbit

centripetal

Tides occur on Earth because of an imbalance between gravity and _______________ centripetal force friction centrifugal force dark energy the Coriolis effect

centripetal force

A boat is most likely to be carried out to sea by a: whirlpool rotary current ebb current tidal bore flood current

ebb current

Water flowing out of an enclosed basin due to the tides is called a/n: neap tide flood current. spring tide. tidal bore. ebb current.

ebb current

how many semidiurnal tides would you expect during one tidal period?

four tides

what pattern of tides would you expect to see for a mixed tidal system? two tides of different heights four tides of roughly equal heights two tides of roughly equal heights four tides of different heights

four tides of different heights

check question 46 for visualzz

ight

Disadvantages of tidal power plants relative to conventional thermal plants include higher initial plant costs, periodicity of tidal currents and ______ high operating costs heat pollution excessive noise impacts on the marine environment air pollution

impacts on the marine enviroment

Which factor would increase the amount of energy an estuarine tidal power plant could generate? weak ebb and flood currents small tidal range large estuarine volume diurnal tidal pattern broad connection to sea

large estuarine pattern

What tidal pattern would best describe a coastline that experienced a maximum tidal range of 6 ft in the morning and smaller 2 ft range in the late afternoon? spring semidiurnal neap diurnal mixed

mixed

The most common tidal pattern around the world are

mixed tides

What are Earth's three tidal patterns called?

mixed, diurnal, semidiurnal

A centrifugal force is one that is directed _____ and a centripetal force is one that is directed _____. (either outward or inward)

outward;inward

Tidal Ranges will be greatest when the Earth and Moon are at: aphelion. perihelion. proxigean. perigee. apogee.

perigee

Some of the tide height numbers in your tide table are preceded by minus signs (or in red print), which tells you that: spring tides are occurring there is insufficient data to provide good values for these tides a rare proxigean tide is occurring the tidal range is very small, and a neap tide is occurring strong offshore winds are expected

spring tides are occuring

how is a semidiurnal period related to a tidal day? The semidiurnal period is not related to a tidal day. The semidiurnal period is about as long as a tidal day. The semidiurnal period is half as long as a tidal day. The semidiurnal period is twice as long as a tidal day.

the semidiurnal period is about half as long as a tidal day

The tides are considered an example of the shallow-water waves because the tidal bulges have a wavelength that is on the order of ____________ (distance)

thousands of kilometers

Ebb: -tidal force -tidal pattern -tidal current

tidal current

mixed: -tidal force -tidal pattern -tidal current

tidal current

gravitational: -tidal force -tidal pattern -tidal current

tidal force

resultant: -tidal force -tidal pattern -tidal current

tidal force

what do we call the time that passes between 2 high tides?

tidal period

The vertical difference between consecutive high and low tides is called the: flood tide. tidal bore. tidal height. tidal range. ebb tide.

tidal range

T/F: A semidiurnal tidal pattern is common along the Atlantic coast of the US

true

how many diurnal tides would you expect during one tidal period

two tides

The Bay of Fundy is well known for which tidal characteristic? two amphidromic points a diurnal tide very high tidal range very large seiche very low tidal range

very high tidal range

Neap tides occur: when the moon is in quadrature. during a storm surge. when the moon is full or new. at summer and winter solstice. when the sun is at perihelion or aphelion.

when the moon is in a quadrature

A tidal current can produce a rapidly spinning body of water called a vortex or:

whirlpool